Waterdrop Advanced NSF 53&42 Certified Refrigerator Water Filter Replacements (Various) on sale for $9.89

WaterdropDirect via Amazon is offering 45% Off Waterdrop Advanced Series NSF 53&42 Certified Refrigerator Water Filter Replacements (Various) on sale for $17.99 – $8.10 w/ promotional code 45OFFWDS = $9.89. Shipping is free with prime.
Available:
GE : MWF, MWFP, MWFA, GWF, GWFA, SmartWater, Kenmore 9991, 46-9991, 469991
Maytag : UKF8001, UKF8001AXX, Whirlpool 4396395, 469006, EDR4RXD1, EveryDrop Filter 4, Puriclean II
GE : GSWF SmartWater 238C2334P001, Kenmore 46-9914, 469914, 9914
LG : LT600P, 5231JA2006A, 5231JA2006B, KENMORE 46-9990, 9990, 469990
GE : MSWF, 101820A, 101821B, 101821-B
GE : GE RPWF